545456789 has 8 divisors (see below), whose sum is σ = 551050560. Its totient is φ = 539872416.

The previous prime is 545456773. The next prime is 545456797. The reversal of 545456789 is 987654545.

545456789 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 545456789 - 2⁴ = 545456773 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 545456789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545456729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199697 + ... + 202409.

It is an arithmetic number, because the mean of its divisors is an integer number (68881320).

Almost surely, 2^545456789 is an apocalyptic number.

It is an amenable number.

545456789 is a deficient number, since it is larger than the sum of its proper divisors (5593771).

545456789 is a wasteful number, since it uses less digits than its factorization.

545456789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4699.

The product of its digits is 6048000, while the sum is 53.

The square root of 545456789 is about 23355.0163562349. The cubic root of 545456789 is about 817.0590608735.

The spelling of 545456789 in words is "five hundred forty-five million, four hundred fifty-six thousand, seven hundred eighty-nine".